#include <iostream>
using namespace std;

class Point
{
public:
    // 定义静态成员函数
    static void public_static_fn()
    {
        cout << "public_static_fn is runing" << endl;
    };
    int x;
    int y;
    Point(int x, int y) : x{x}, y{y} {}
};
int main()
{
    Point::public_static_fn();
}
